The life expectancy is several times to common zincification bolt;
寿命是一般镀锌螺钉的数倍；
2
Heat zincification step: to install clad layer on the surface of zonal steel.
热镀锌步骤：用于在带钢表面上镀层。
3
The potassium chloride zincification technics was introduced, and its proportioning and condition for primary working procedure, and check and measure for primary ingredient.